Public Enum NavigationType
    Home
    SearchNames
    EditName
    SearchConcepts
    EditConcept
    SearchReferences
    EditReference
End Enum

Public Class NavigationRequest
    Public Type As NavigationType = NavigationType.Home
    Public Id As String = ""
End Class

Public Interface INavigationControl

    Event NavigateToEvent(ByVal sender As UserControl, ByVal request As NavigationRequest)

End Interface
